Final answer:
Captain Smith was concerned about the lifeboats because they were crucial for the crew's survival and rescue in case of a shipwreck. They served as a means to reach the shore and find help.
Step-by-step explanation:
Captain Smith was concerned about the lifeboats because they were the means of rescue and survival for the crew and passengers in case of a shipwreck. An example of this concern can be seen in the text when the captain mentions that if the other boats had survived the wreck, the lifeboat would be out hunting for them. The lifeboats were essential for the crew's safety and their ability to reach the shore.